TROUBLESHOOTING
1
/17
!
[
] [
] Discharge Gas Pressure Sensor Abnormality
Malfunction of pressure sensor
Is connector CN28Pd on the
printed circuit board for relay
(PCB
D
) correctly connected?
Connect correctly
Is DC24V between
connector CN28Pd PIN1 and
PIN3 on the printed circuit
board for relay (PCB
D
)?
Replace the
printed circuit board
for relay (PCB
D
)
Is less than DC 0.1V or
more than DC 4.9V between
connector CN28Pd PIN2 and
PIN3 on the printed circuit
board for relay (PCB
D
) when
discharge gas pressure
sensor is connected?
Replace the printed
circuit board for
relay (PCB
D
)
Is discharge gas
pressure sensor
connecting pipe clogging?
Remove clogging
in the pipe.
Discharge gas Pressure
Sensor Abnormality
Yes
Yes
Yes
Yes
No
No
No
No
